In part four of The Border’s New Boundaries series, the Trump Administration is running up against a blockade of its own at a national park on the border where the challenge isn’t only the dollars to build a wall, it’s the geography.

The Health and Wealth Raffle started in 2003 to benefit the Barrow Neurological Foundation. So rather than a state-run lottery, it’s run by the nonprofit to raise funds. Well, it’s the same logic as the lottery. People want to win. So it’s a different way for Barrow to raise money by incentivizing people to donate.

When two hikers recently went missing at the bottom of the Grand Canyon, officials deployed drones to try to find them. With me to talk about this is Matt Vandzura, chief ranger at Grand Canyon National Park.

When we look at a map, we assume it’s accurate, that it will show us where to go, how far away someplace is and where we are located in the world. But maps are products of their time. And that means they change. When you look at many of the maps in a new collection at ASU’s Hayden Library, you are supposed to be a little disoriented.

U.S. Rep. Kyrsten Sinema has been under fire from Republicans recently for accepting donations from former Backpage.com founders Michael Lacey and Jim Larkin. But just how much do most politicians really know about where their campaign donations come from?

President Trump has signed an executive order calling for Interior Secretary Ryan Zinke to review national monuments bigger than 100,000 acres, which were created since 1996. With me to talk about this is Randi Spivak. She runs the Public Lands Program at the Tucson-based Center for Biological Diversity.

Arizona schools chief Diane Douglas says she’s officially supporting the expansion of a state sales tax that funds education. If passed the proposal would generate about $400 million a year to fund things like teacher salaries and school buildings.

Social isolation and loneliness can put older adults at risk for several chronic conditions. In fact, prolonged isolation is comparable to smoking 15 cigarettes a day, according to the AARP Foundation.

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